nit

ismp/src/module.rs

@@ -57,13 +57,16 @@ pub type DispatchResult = Result<DispatchSuccess, DispatchError>;
 pub trait IsmpModule {
     /// Called by the message handler on a module, to notify module of a new POST request
     /// the module may choose to respond immediately, or in a later block
+    /// If the module is a contract, it returns the gas consumed while executing
     fn on_accept(&self, request: PostRequest) -> Result<Gas, Error>;
 
     /// Called by the message handler on a module, to notify module of a response to a previously
     /// sent out request
+    /// If the module is a contract, it returns the gas consumed while executing
     fn on_response(&self, response: Response) -> Result<Gas, Error>;
 
     /// Called by the message handler on a module, to notify module of requests that were previously
     /// sent but have now timed-out
+    /// If the module is a contract, it returns the gas consumed while executing
     fn on_timeout(&self, request: Request) -> Result<Gas, Error>;
 }